VBA 6.5 to VBA 7.0

Hello
We have a small VBA app at work that are witten in VBA 6.5
The program rather small and simple ( i did not write it and are a complet newbe here) and gather information for various sharepoint lists and makes different pdf files . (simply put)

after my company upgraded form excel 2007 to excel 2010 (vba 7.0) excel is shutting down when trying to use the vba
"excel has stopped working"
choises: restart or debug